Sketch map of the Red Mountain intrusive center. Generalized surface geology of Red Mountain is modified from Wallace and others (1978), and Geraghty and others (1988). Two faults, the Woods Creek and the Vasquez Pass, cut across the Middle Proterozoic granite of the area. Vasquez Pass fault offsets a dike and indicates down to the east movement of the Red Mountain porphyry system. Only a few stocks of the Red Mountain system are exposed at surface. Numbers show dip of dike and faults; U, upthrown side; D, downdropped side of fault.

Contexts in source publication

Context 1

... Ar/ 39 Ar data from most stocks of the Red Mountain intrusive system and associated Urad-Henderson molybdenum deposits and alteration zones. The Red Mountain intrusive system within the Colorado mineral belt is located in the Front Range of Colorado. The system is of Tertiary age and intrudes Mid­ dle Proterozoic (1.4 Ga) Silver Plume Granite ( fig. 24) and comprises 15 stocks and 4 igneous breccias (Lovering and Goddard, 1950;Wallace and others, 1978;Carten and others, 1988;Geraghty and others, 1988). Only four of the stocks and breccias are exposed at the surface; the remainder are below the surface and were discovered during the course of explora­ tion and underground mining. The ...

Context 2

... phases. The combined argon age-spectrum and paleomagnetic data also allow the conclusion that the Red Mountain intrusive sys­ tem was tilted by subsequent structural activity. The magnitude of tilting was between 15° and 25° and occurred about an approximately north-northeast horizontal axis paralleling the orientation of the Woods Creek fault ( fig. ...